The Champs Elysees prepares for the mass that Pope Leo XIV will celebrate during his visit in Paris, Wednesday, Sept. 23, 2026. (AP Photo/Teresa Suarez)

A pigeon flies past Pope Leo XIV as he arrives for his weekly general audience in St. Peter's Square, at the Vatican, Wednesday, Sept. 23, 2026. (AP Photo/Alessandra Tarantino)

Pope Leo XIV boards a flight to Paris at Rome's Leonardo da Vinci International Airport in Fiumicino for a four-day pastoral visit to France, Friday, Sept. 25, 2026. (AP Photo/Alessandra Tarantino)

A box of flu vaccines is displayed at a pharmacy in New York on Tuesday, Sept. 15, 2026. (AP Photo/Mary Conlon)

Health and Human Services Secretary Robert F. Kennedy Jr. listens as President Donald Trump speaks during an event about healthcare in the Oval Office of the White House, Friday Sept. 18, 2026, in Washington. (AP Photo/Jacquelyn Martin)

FILE - A campaign rally site for Republican presidential candidate former President Donald Trump is empty and littered with debris on July 13, 2024, in Butler, Pa. (AP Photo/Evan Vucci, File)

Marine One lifts off from the South Lawn of the White House after President Donald Trump and China's President Xi Jinping toured the helicopter, Thursday, Sept. 24, 2026, in Washington, during a State Visit. (AP Photo/Carolyn Kaster)

President Donald Trump, center right, first lady Melania Trump, right, China's President Xi Jinping, center left, and his wife Peng Liyuan watch a military review in the Rose Garden of the White House, Thursday, Sept. 24, 2026, in Washington. (AP Photo/Alex Brandon)